Illuminating device.



i W. H. SPENCER.

ILLUMINATING DEVICE. APPLICATION rmzn 11110.21, 1610.

Patented June 27, 1911.

5 SHEETS-SHEET 1.

W. H. SPENCER. ILLUMINATING DEVICE. APPLIOATION FILED M10. 27, 1910.

Patented June 27,1911.

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W. H. SPENCER. ILLUMINATING DEVICE. APPLICATION FILED DEG. 27, 191o.

Patented June 27, 1911.

3 SHEETS-11331 3.

II S w W a m m ru m m M WITI?ES:

WILLIAM H. SPENCER, OF NEW YORK, N. Y., ASSIGNOR T6 GEORGE FRINKSPENCER, 0F NEWARK, NEW JERSEY.

ILLUMINATING DEVICE.

Application filed December 27, 1910. Serial No. 599,471.

T 0 all whom it may concern:

Beit known that I, VVILLIAM H. SPENCER, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in IlluminatingDevices; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to characters of referencemarked thereon, which form a part of this specification.

The present invention relates, generally,

to improvements in illuminating devices;-

and the invention refers, more particularly, to a novel construction ofilluminating device adapted to be used in connection with book-keepersdesks, bank desks, reading desks, display tablesvand cabinets and forother similar uses.

The present invention has for its principal ob3cct to provide anilluminating device comprisin a novel construction and a1- rangement oflighting units with reflectormembers and shades, and standards forproperly supporting the same, all being arranged and combined in such amanner, so that when placed in proper relation with desks, tables, orthe like, the light-rays will be controlled and directed so as toproduce an even illumination of the entire surface of the desk, table orthe like, and at the same time so arranging the reflector angles, so asto throw the maximum light-flux to the farthest point to be illuminated.

A further object of the present invention is to so arrange areflector-member and a supportin means therefor, to obtain the highestiluminating efficiency upon the working surface of a desk, table, or thelike, at the same time shielding the eyes from both the direct andindirect glare or rays of the lighting units; and, furthermore, distributingsaid lighting units and reflectormembers, so that the.light-flux is directed from the variousretlector-points or sources,causing such a difi'usion'thereof as will eliminate shadows and theglare or reflection of white paper, whether the clerk or other personusm said desk, table, or the like, is working in either a left hand orright hand position.

parts, as well as in the details of the con-.

struction thereof, all of which will be here: inafter more fullydescribed, and then finally embodied in the clauses of the claim whichare appended to and which form an essential part of this specification.

The invention is clearly illustrated in-the accompanying drawings, inwhich Figure 1 is a side elevation of a double desk equipped with thenovel construction-- of illuminating device made according to a andembodying the principles of the present invention, a portion of saiddesk being shown broken away. Fig. 2 is a large detail cross-section ofthe same, taken on line 2-2 in said Fig. 1, and looking in the directionof the arrow :12. Fig. 3 is a similar large detail cross-section of thenovel construction of illuminating device, the same being applied to asingle desk, and being slightly modified in construction so as to suitits use with said single desk.

Similar characters of reference are employed in all of the-abovedescribed views, to indicate corresponding parts.

Referring now to the said drawings, the reference-character 1 indicatesa double desk provided with the respective working surfaces or tops 2and 3 which extend upon either side of its central longitudinal portion4. Secured u on said central lon itudinal portion 4 of said double desk1,%y means of baseeportio'ns 5, of any suitable configuration or design,is a plurality of supe porting columns or standardsfi, said co umns orstandards 6 being provided with suitable heads 7 at their upper ends.Ex-

t-endin laterally and horizontally from said heads and in oppositedirections, is a pair of-supporting arms or brackets 8 which areprovided with receiving grooves or sockets 9, located adjacent to thefree ends of the said supporting arms or brackets, and in the uppersurface thereof. i

The reference-character indicates a combined reflector casing and lampshade,

" being adapted to be received. in said receiving grooves or sockets 9of said supporting arms or brackets 8, to support the said combinedrellector casing and lamp-shape 10, as the latter extends longitudinallyfrom end to end of said desk 1.. Said sidewalls 11 are each furtherprovided, at a point adjacent to their lower marginal edges, with anoutwardly projecting sti'liening head or rib 13. Formed in the top wallof said combined reflector-casing and lamp-shade 10 is an upwardlyprojecting and longitudinally extending trough-like member 14, adaptedto provide a wiring trough or conduit, and extending into saidtrough-like member 14 are the side-walls 15 of a suitably formedlamp-supporting member 16, said side-walls 15 being suitably secured, inany desirable manner, in their assembled relation to said trough-likemember 14. Said lamp-supporting member 16 is provided, at suitableintervals throughout its length, preferably twelve inches apart, withholes. or openings adapted to receive the sockets 17 of suitable lamps18. Each socket 17' is provided with an annular flange or rim 19 forretaining said sockets in their assembled relation with saidlamp-supporting member 16. The wires 20 of the said lamps 18, passingthrough said sockets 17, enter the interior of said trough-like member14:, where they may be secured in any suitable manner to the main orfeed-wires 21 passing therethrough; Secured upon the inner sides of thesaid walls 11 of said combined reflector-casing and lamp-shade 10 are aseries of reflectormembers 22, the same being supported by channel bars23, or any other suitable devices, fixed upon said walls 11. Saidredoctor-members 22 are disposed and secured in such a manner, so as topresent a series of angularly disposed reflecting surfaces, eachreflecting surface lying in the lane of a chord of said concave walls11. aid reflector-members 22 may be made of silvered glass, or any othersuitable material. The

' top wall of said combined reflectorcasing and lamp-shade is providedwith a plurality of holes or openings 24, which permit of theventilation of the interior. of said combined reflector-casing andlamp-shade, said'holes serving to conduct away the heat generated bysaid lamps, thereby preventing the heat collecting-and causing a morerapid disintegration'of the lamps.

Referring now to Fig. 3 of the'drawings, I have illustrated therein mynovel illumione,

nating device applied to a single desk 25 from an inspection of saidfigureoi the drawings, the construction oi said illuminate ing device isthe same as that hereinabove described, except thatthe reflector-membersare removed from one ofthe side-walls 11, since their location there is,in such use, unnecessary. The side-walls 11 facing or upon the side ofthe working surface of said desk serves to shield or shade the eyes ofthe user of the desk from the direct rays of the lamps.

As will scription, ings, the illuminating the entire length of walls 11are curved so as distributlon of said reflector-members 23 in such aseries of angles as will redirect a portion of the direct rays of thelight pro-Q duced by the lamps'l8 to the outermost portions of theworking surface of said desk, and the same will cause a maximum flux oflight at such points; furthermore,

and an inspection of the drawdevice is made to run the desk. The s1dethedirect rays of the lamps flood the inner 1 portions of said desk surfacewith light,

interrupting the direct rays of the lamps and preventing the same fromreaching the eyes of the-users of the desk. The lamps 18 being spaced atproper intervals throughout said combined reflector-casing andlampshades, the direct and indirect B ht-rays springing from varioussources and reflec- 61011 points or surfaces, cause a. perfect diffusionand distribution of light, thus making it possible for the users of thedesk to work in any position, either to the left hand or the right handportions of the desk, without annoying un er shadows, or ually annoyingglare or reflection being pr need from the surface of books or paper.

26. As will be apparentto permit of the be apparent from theabove de- Itwill thus be readily apparent, that my 'Gopies of this patent may beobtained without departing from the scope of the present invention asset forth in the foregoing specification, and as defined in the claimsappended thereto. Hence, I do not limit my invention to the exactarrange ments and combinations'of the various devices and parts as setforth in the said foregoing specification, nor do I confine myself tothe exact details of the construction of the said parts, as illustratedin the accompanying drawings.

I claim: 1.-An illuminating device for desks and the like, comprising acombined reflectorcasing and lamp-shade, downwardly extending andoutwardly flaring concave side-walls connected therewith,longitudinallyextending beads or ribs connected with the lower marginaledge of each side wall, outwardly projecting stiflening beads or ribsformed in said side walls, a plu-s' rality of lamps or lighting unitssupported within said combined reflector-casing and lamp-shade, a seriesof reflector-members, secured upon said side-walls of said combinedreflector-casing and lamp-shade,

adapted to throw a maximum light-flux tothe outer portions of the desksurface, the

rays of said light-flux being directed in lines below the level of theeyes of the user of the desks, and a plurality of columns or standardsprovided with means for engaging said beads or ribs connected with thelower marginal edge of said side-walls of said reflector casing and lampshade to support the latter so that'the same will extend the entirelength of the desk, substantially as and for the purposes set forth.

casing and lamp-shade, downwardly ex-' tending and outwardly flaringconcave side-walls connected therewith, longitudinally extending beadsor ribs connected with'the lower marginal edge of each side wall,outwardly projecting stiffening beads or ribs formed in said side walls,a plurality of lamps or lighting units supported within said combinedreflector casing and lamp-shade, a series of' reflector-members, securedupon said sideawalls of said rei'lector-casingv and lamp shade andarranged in a series of angular positions so as to provide angularlydisposed reflecting surfaces adapted to throw a maximum light-flux tothe outer portions of the desklsii face, the rays of said light-fluxbeing directed in lines below the level of the eyes of the user of thedisk, a plurality of columns or standards, and outwardly extendingsupporting arms or brackets connected with said columns or standards,the same being provided with grooves or receiving sockets for receivingsaid marginal beads or ribs of the sidewalls of said combinedreflector-casing and lamp-shade so as to support the latterlongitudinally above the desk surface, substantially as and for thepurposes set forth.

In testimony thatl claim the invention set forth above .[have hereuntoset my hand this 14th day of December, 1910.

WILLIAM H. SPENCER. V

Witnesses: ALBERT P. BENITO,

CHAS. K. WYATT.

for-.five cents each, by addressing the Commissioner of Patents.

- Washington, D. 0. I

